AL
$500 TO $5,000
F1
MODERATE DAMAGE (73-112 MPH)
CST
30 MIN
TORNADO
WITH LARGE HAIL
NOT CONFIRMED
$5,000 TO $50,000
F2
SIGNIFICANT DAMAGE (113-157 MPH)
15 MIN
18 - 55 YDS
56 - 175 YDS
300
1 - 3.1 MILES
F0
LIGHT DAMAGE (40-72 MPH)
$50,000 TO $500,000
2 HRS
< 1 MILE
$50 TO $500
110
< $50
3.2 - 9.9 MILES
FROM STORM DATA
90
120
176 - 527 YDS
600
NO DAMAGE REPORTED
150
< 18 YDS
FROM NEWSPAPER CLIPPINGS
230
FROM NWS SURVEY
WITH LARGE HAIL AND HEAVY RAIN
50
WATERSPOUT MOVING ASHORE
10
20
30
70
450
45 MIN
60
180
100
210
$500,000 TO $5,000,000
360
390
F3
SEVERE DAMAGE (158-206 MPH)
32 - 99.9 MILES
80
1800
10 - 31.9 MILES
240
COUNTER-CLOCKWISE
CONFIRMED
1500
220
AR
1250
750
> 2 HRS
CONE SHAPED
400
$5,000,000 TO $50,000,000
900
WITH HEAVY RAIN
THICK COLUMN
MODERATE COLUMN
THIN COLUMN
WITH NO RAIN OR HAIL
1320
40
STRAIGHT
AZ
500
1200
528 - 1759 YDS
45 DEGREES TO THE LEFT
3000
OTHER
ROPELIKE
4500
MST
CA
PST
PDT
CO
1 HR
1 HR 30 MI
60 DEGREES TO THE RIGHT
250
660
45 DEGREES TO THE RIGHT
200
CLOCKWISE
190
CT
SINUSOIDAL
1 HR 45 MI
EST
$50,000,000 TO $500,000,000
F4
DEVASTATING DAMAGE (207-260 MPH)
DE
160
EDT
FL
520
380
1350
GA
130
9
IA
1050
1 HR 15 MI
2500
3960
F5
INCREDIBLE DAMAGE (261-318 MPH)
30 DEGREES TO THE LEFT
2640
LEFT TURN LOOP
RIGHT TURN LOOP
1000
260
670
530
1600
420
480
4600
270
ID
0
TORNADO MOVING OVER A LARGE BO
IL
170
NO VISIBLE SIGN
CDT
3900
> 1760 YDS
7890
30 DEGREES TO THE RIGHT
5280
2550
690
370
310
IN
510
800
KS
2000
1980
2100
2700
700
350
OBSCURED BY HEAVY RAIN
KY
2400
LA
550
MA
840
MD
ME
MI
UNKNOWN
540
440
720
MN
60 DEGREES TO THE LEFT
8800
580
> 100 MILES
1700
2140
2600
MO
MS
MT
MDT
NC
ND
NON-TORNADIC WINDS > 50 KTS
140
6000
280
NE
FUNNEL CLOUD
5100
7920
NH
NJ
NM
1300
NV
NY
940
OH
830
OK
OR
PA
RI
SC
SD
2450
1650
3500
1940
630
490
760
850
8000
410
870
TN
TX
1550
1400
4800
1340
330
3700
UT
VA
VT
WA
WI
WV
WY
4200
7650